What's the actual size difference between the OG GP 4000 28mm and the GP 5000 32mm? I know the 4000s come up bigger and want to know if I can switch to the 32 without having to get bigger tubes.
@jakemcree started
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What's the actual size difference between the OG GP 4000 28mm and the GP 5000 32mm? I know the 4000s come up bigger and want to know if I can switch to the 32 without having to get bigger tubes.